QuickForm - форма с функциями калькулятора и зависимыми полями - страница 40 - Конструкторы форм

TypeError: x.parentNode.parentNode.getElements is not a function
if(m&&m<=x.parentNode.parentNode.getElements('.qfcloneone').length)return;

//$doc->addStylesheet(JURI::root(true)."/components/com_quickform/css/".$this->rowOld->qfcss);
//$doc->addScript(JURI::root(true)."/components/com_quickform/js/quickform.js");

	function buildRadio($pat,$row='') {
		static $a=1;
		$i=0;
		preg_match('/([^"]+)(?=" class="inp_sel")/', $pat, $m);
		$row.='<div class="qfradio"><label>'.$m[0].'</label><br>';
		$opts=explode('</div><div>',$pat);
		$name='r'.$this->id.'_'.$a;$n=0;$a++;
		foreach($opts as $opt) {
			$value='';
//			if($this->rowOld->calc) {
				$vals=explode('input',$opt);
				foreach($vals as $val){
					if(strpos($val,'opt_modifer'))$value.=$val{strpos($val,'value="')+7};
				}

				preg_match('/([^"]+)(?=" class="opt_price)/', $opt, $o);
				$value.=trim($o?$o[0]:'');
//			}

			$cl = '';
			if(strpos($opt,'inp_svz')){
				preg_match('/([^"]+)(?=" class="inp_svz)/', $opt, $o);
				$cl =' class="qfsvz_'.trim($o?$o[0]:'').'"';
			}

			preg_match('/([^"]+)(?=" class="inp_opt")/', $opt, $m);
			$row.=$m[0].'<input type="radio" name="'.$name.'" value="'.$i.'_'.$value.'" '.(!$n?'checked="checked"':'').$cl.'>';
			$n++;
			$i++;
		}
		$row.='</div>';
		return $row;
	}

.rabs input[type="radio"] {
display: none;
}
.rabs label {
background: #ffffff;
border: 1px solid #ddd;
color: #999;
display: inline-block;
font-family: Arial;
font-size: 16px;
margin: 18px;
padding: 6px 12px;
cursor:pointer;
-moz-box-shadow: #ccc 0 0px 1px;
-webkit-box-shadow: #ccc 0 0px 1px;
box-shadow: #ccc 0 0px 1px;
}
.rabs input[type="radio"]:checked + label {
background: #fff;
color: #000;
border: 1px solid #0fa0bd;
-webkit-box-shadow: 0px 0px 9px #50D029;
-moz-box-shadow: 0px 0px 9px #50D029;
-ms-box-shadow: 0px 0px 9px #50D029;
-o-box-shadow: 0px 0px 9px #50D029;
box-shadow: 0px 0px 9px #50D029;
}

<div class="rabs">
<input type="radio" id="tab-1" name="radioname"  checked>
<label for="tab-1">Больше</label>
<input type="radio" id="tab-2" name="radioname">
<label for="tab-2">Меньше</label>
<input type="radio" id="tab-3" name="radioname" >
<label for="tab-3">Среднее</label>
</div>